hp dari |x-3|=|-x| adalah

x - 3 = -x
x + x = 3
2x = 3
x = 3/2

Hp { 3/2 }

Bab Nilai Mutlak
Matematika SMA Kelas X

|x - 3| = |-x|
|x - 3| = |x|

(x - 3)² = (x)²
(x - 3)² - (x)² = 0
(x - 3 + x) (x - 3 - x) = 0
(2x - 3) (-3) = 0
2x - 3 = 0
2x = 3
x = 3/2

HP = { 3/2 }